Lateral Dominance as a Factor in the Perception of Non-Symbolic Material

Abstract

Equal numbers of right- and left-eyed Ss were used in an experiment to determine the relative efficacy of stereo- versus non-stereo slides with stereoscopic projection for the detection of minor disparities in pairs of photographs. Stimulus materials were photographs of popcorn, with one kernel removed from one picture in each pair. The time required for the detection of the disparate kernel was recorded. Right-eyed Ss proved greatly superior to left-eyed Ss, and the non-stereo pairs of slides more effective than true stereo pairs. While detection times for the four quadrants were significantly different, no significant interaction between eyedness and quadrants occurred, indicating that scanning patterns for the two groups were not significantly different.